BLACK+DECKER BDCR20B 20V Max Lithium Bare Reciprocating Saw Tool-Free Blade Change Pivoting Shoe Maximum initial battery voltage (measured without a workload) is 20 volts; Nominal voltage is 18. Variable-Speed Trigger Stroke Length: 7/8-Inch Includes: BDCR20 20V MAX Lithium Reciprocating Sawand 1 Reciprocating Saw Blade Tool-Free Blade Change Pivoting Shoe Maximum initial battery voltage is 20 volts Tool-free blade change Pivoting shoe Note: Maximum initial battery voltage (measured without a workload) is 20 volts.  Nominal voltage is 18.